High potential switch



Dec. 29, 1931. H. B. MASSEY 7 HIGH POTENTIAL SWITCH 2 Shets-Sheet Filed March 14, 1930 mm &

Dec. 29, 193L H. B. MASSEY HIGH POTENTIAL SWITCH Filed March 14, 1930 2 Sheets-Sheet 2 lllil l Emm -rents of; high amper age Patented Dec. 29, 1931 osfliclz;

HE S mes vv ssssm swss mmwmssmm;Tommie; Ann INDUSTRIAL OM ANY: 01? ssswssms, PENN YLVAN m mmm o rENNs vAm mgnireiumwmnsw mcn ApplicationffilewMarch 14, 1930. Serigil No; 435,899.

This in ention Relates, to e g p i fi tifl electric Switch Q- fE the type used; to yblieak currents i high ampenage r I t has beeni found; that condllctersi rbus ibars fmz carltying cur,rents f;,3Q00-' amperes 01 higher are more eflicient for alternating current; if such, eanduct ansi are a'rnanged in gm ps One such. annangement. is: in. th form; Qfi a hqllgm square, the rectangular w-conductorsbe ng separated, 10m each: ot er- GY HdI 'iQ LLhO QYY T conduqth shaye alsojbsen se 1, i

' It; ism Qbjecto'f; thi inven ie ito provid t sw tchi dap ed; fer; connestignl to, conductors ar anged aQh H square or other hql ow fo m, and hichhas he me e ble a vantages as the? Q ldl QtQ It s snqtheb obje t- Q he in ent-ion to pro ide wsy i c r. Wh Q can afely; ca y nQthen Q jeQtQf thisinw nti is? to pr-i vide at switch whiq i s s mple a d; posi ive n it c ion, yetQneby wll ehmeryshig prese ay; e btai e sbetween he e atiyely nqvable-contac s;

e esndfu therebjectsiwill. e apparent 'rQn11 the; fQ QW ng escrip ion Whem sken I uQQllll c iQ-fi wit t e; compsnyi g raw nss w e ein;

Eig, is Side, e atiqnq of switc mvdying h en iom V ga e q nn; ne 2T2 Q g;.; E gesw e tionionin 31 3@ f g; -M; Fig. AL is an enlarged. section of one; perisn f h meva encb ta qnary en s/ and;

Fig. 4;

e e g o the -dr w ngs, k uppqrting as ap de carrying paced t tionary n u at rs such 3- Th base $1; sb q, 'fin ihs acks ss o me e on e iprqeating, ar i g -shav ng, r l er herewssh wnson h d wings. base 1 smad E 0 wei ph nn l: iron lh v ns 1 1 .1 ange e eo i ginwsrdlya ro le s 5 ridi r g- 01i these fla ges. QI LPliage 4 has sw d h es nsulst rrfiv n n 1 which is flibuiited ,thev mqyahleswite p arts lst s-Z and 231 1 tstw sry it urg'o in edby a pr s ur p yi Structure Wh10h includes two strapslfi riveted, .01; other- 18!: to receive acqrrespond-ingly angledsocket Fig; 5; is similar v-ieweat;fight apgles tp t0. Eachseetor is fbrme d'inthe shape'of a melhhefs. 7 end; 8.Whi ch ai'e l hoilewcylindens having them outer ends;.s1itt.ede and. perforated; 6211 clampingengagement- With c0nduetprs arranged; as whollow square.

I will be clear; that-,thisjswiitch, is equally. well adapted; to conductors arnangedf in; other configurations: than; hollow] square, opt-0 hollgw" cylindrical; cOnductors; :It-,.Wi11.= be meted thatstationany contact? is longer; than qn p sincethe .mevable contactitelescio es am with, contact .7 to open theswitch. A V

Mnvahle n ulator. 61 carries. a .Ui-shaped 9 wh c pa tially: surrounds. and suppen s he r q plxocating Contact 19; by: meros's p 1 sai Qn-Qss p nmombleinislets12; in

contact 10,; The ends ofcross.pin llzproject beyond strap, 9, andgear-ry equalizer bars, 13.

$ 16 equ llise i bars 3 are. normally, p0sit gn ed': vert cally, one qn eaich side! of; the

ms ab e b ad 11, inkslet are pivetedsrto 9 he: endsi qu lizer bars 17.3, these links ng 1. 1 1 fi ne t d .t 1 evers 7153 fan app yinsa da e e s ng gh p s er g 1 5 5 et n he t onary. andimavable cpnta ts t t V i.

Asseeg 1 n Eigs 1 and 2, the mQVable contact 10 t leswp ve a ionaryontacts 7 =a.nd:8,

mqv-ingiq the, right of Eig. 1; to}: Open: the

switch. Ea eh end Ofg mwi hle contact 10: is

Wise I sepured t0;,the blade. These straps; 1.6 hav hei nds.- p 'n omted to. receive belts. 17 hes -bo ts 17 are hexsgonslzsnhne endassa-t on levers 15, as seen inflig; 2. V

I T-wo seet01;s.18 partially surreund-eachend of:movable blade 10; tospply pressure-therein cross-section 91; rigidity and strength.

'Asseen i Fig.2; each sector-has a threaded endportion 19to receive the threaded'endof bolt 17 the other end 20. having an unthreaded j opening to IZLIIQWA, the ipessa'ge of bolt 11? The sect0rs 18'cbnformgenemliy to the outline of the movable COIltiGt 1O .b itthey have 0 11 flattened p ortiqns 21 'for,' Contact} with fol rraised portions 22 01; thestatienaryicpntgl ct; these pbrtions22 being; showhves fivets which project beyond the outer surface of the contact.

In order to insure that the movable contact 10 telescopes over stationary contact 8 to a definite position before flattened portions 21 are clamped against 22, the following mechanism is provided. Adjacent the left hand end of movable contact 10 and within the same is secured a bracket 23 having backwardly eX- tending arms 24 for pivotally supporting a latch 25. Latch 25 extends upwardly adja: cent the cross pin 11 mounted on bracket '9, this end of the latch being notched as at 26 to engage cross pin 11. The other end of latch has a slanting nose 27, and a spring 28 normally holds the latch 25 to the position shown in full lines in Fig. 5.

The operation of the switch is as follows. In the open position thereof pin 11 is at the right hand end of slot 12 in blade 10, and latch 25 is raised by spring 28 so that notch 26 of the latch engages cross pin 11. The equalizer bars 13 have been partially turned when the switch was last opened, so that levers 15 have been rotated to thus relieve pres sure on sectors 18. If the reciprocable carriage 4 is now moved to the left, movement of pin 11 is transmitted to blade 10 by means of latch 25, blade 10 telescoping over contact 7 to a position bridging contacts 7 and 8.

Then the end of contact 10 slips over contact 8 the sloping face 27 is engaged by contact 8 and latch 25 is turned about its pivot against the tension of spring 28. Notched end 26 of latch 25 thus releases pin 11 and further movement of carriage 41 advances pin 11 to the left hand end of slots 12, the blade 10 being prevented from further movement by the engagement of bracket 23 thereon with the edge of contact 8. The equalizer bars 13 are thus straightened to the position shown in Fig. 1, and moving levers 15 to their vertical positions. The turning of levers 15 turns bolts 17 to move segments 18 together at both the top and bottom, by means of the threaded engagement of bolts 17 with ends 19 of segments 18. The flattened portions 21 are thus pressed against rivets 22 under very high ressure, this high pressure contact occurring ary contacts 7 and 8.

To open the switch the carriage 4 is moved to the right, thus moving pin 11 to the right hand end of slots 12. The equalizer bars 13 are thus twisted about pin 11 to rotate bolts 17, thus relieving the high pressure engagement of the contacts. When pin 11 reaches the end of its slot, latch 25 is positioned to move up to catch the notched end 26 over pin 11, as seen in Fig. 5, as soon as the other end of the latch has been released by the relative movement between blade 10 and contact 8. As soon as blade 10 leaves contact 8, the latch 25 thus moves up and the switch continues to move to open position, the parts heetween movable blade 10 and both stationing positioned for the next closing movement, since notch 26 holds pin 11 to the right hand end of the slots 12.

It will be understood that the flattened portions 21 and rivets 22 could be reversed, or these parts could be replaced by other mechanical *eXpedients, such that high pressure contact is obtained between the movable and stationary contacts.

Various other modifications may be made without departing from this invention as set forth in the accompanying claims.

I claim:

1. In a high tension switch, two spaced stationary contacts, a cylindrical contact for bridging the same, means for moving said cylindrical contact axially to telescope the same over the stationary contacts, and means for clamping the movable contact into high pressure engagement with the stationary contacts.

2. In a high tension switch, two spaced stationary contacts, a reciprocable contact telescoping over said stationary contacts to bridge the same, clamping means surrounding said reciprocable contact for causing high pressure engagement thereof with the stationary contacts, and operating means for reciprocating said reciprocable contact and for operating said clamping means.

3. The structure as in claim 2 wherein said operating means has a lost-motion connection with said reciprocable contact.

4:. The structure as in claim 2 wherein said operating means has a lost-motion connection with said reciprocable contact, and means for causing simultaneous movement of said reciprocable contact and said operating means in one direction of movement.

5. In a high tension switch, a stationary contact, a movable contact for telescoping engagement over said stationary contact, clamping means surrounding said movable contact for causing high pressure engagement thereof with the stationary contact, op- 1 crating means for telescoping said movable contact over said stationary contact, and means for thereafter operating said clamping means.

6. In a high tension switch, a stationary 5 contact, a reciprocable contact for telescoping engagement over said stationary contact, operating means for telescoping said reciprocable contact over said stationary contact, clamping means mounted on and movable with said reciprocable contact for causing high pressure engagement thereof with the stationary contact, and means connecting said clamping means with said operating means for clamping movement after said reciproca- 1 ble contact has reached the closed position.

7. In a high tension switch, a stationary contact, a reciprocable contact for telescoping engagement over said stationary contact, I operating means for telescoping said reciprocable contact over said stationary contact, a lost-motion connection between said reciprocable contact and said operating means, clamping means surrounding said reciprocable contact for causing high pressure engagement thereof with the stationary contact and operable upon relative movement between said reciprocable contact and said operating means, and a latch restraining relative movement of said reciprocable contact and said operating means until said contact has telescoped over said stationary contact when the'switch closes.

8. The structure as in claim 7 wherein said clamping means includes a threaded member which is rotated to obtain this pressure. 7

'9. The structure as in claim 7 wherein a spring returns said latch to its restraining position when the switch is opened. 7 I In testimony whereof, I afliX mysignature.

HEMSLEY B. MASSEY. 

